Computed axial lithography
Computed axial lithography is a method for 3D printing based on computerised tomography scans to create objects from photo-curable resin.{{Cite journal|last1=Kelly|first1=Brett E.|last2=Bhattacharya|first2=Indrasen|last3=Heidari|first3=Hossein|last4=Shusteff|first4=Maxim|last5=Spadaccini|first5=Christopher M.|last6=Taylor|first6=Hayden K.|date=2019-01-31|title=Volumetric additive manufacturing via tomographic reconstruction|journal=Science|volume=363|issue=6431|language=en|pages=1075–1079|doi=10.1126/science.aau7114|issn=0036-8075|pmid=30705152|bibcode=2019Sci...363.1075K|doi-access=free}}{{Cite web|url=https://www.greencarcongress.com/2019/02/20190201-cal.html|title=UC Berkeley team develops 3D printing with light: Computed Axial Lithography|website=Green Car Congress|access-date=2019-02-08}}{{Cite web|url=https://www.3dprintingmedia.network/more-details-emerge-on-uc-berkeley-llnl-new-cal-volumetric-3d-printing-method/|title=More details emerge on UC Berkeley-LLNL new CAL volumetric 3D printing|date=2019-02-01|website=3D Printing Media Network|language=en-US|access-date=2019-02-08}}{{Cite web|url=https://techcrunch.com/2019/02/01/this-light-powered-3d-printer-materializes-objects-all-at-once/|title=This light-powered 3D printer materializes objects all at once|website=TechCrunch|language=en-US|access-date=2019-02-09}} The process was developed by a collaboration between the University of California, Berkeley and the Lawrence Livermore National Laboratory.{{cite arXiv|last1=Kelly|first1=Brett|last2=Bhattacharya|first2=Indrasen|last3=Shusteff|first3=Maxim|last4=Panas|first4=Robert M.|last5=Taylor|first5=Hayden K.|last6=Spadaccini|first6=Christopher M.|date=2017-05-16|title=Computed Axial Lithography (CAL): Toward Single Step 3D Printing of Arbitrary Geometries|eprint=1705.05893|class=cs.GR}} Unlike other methods of 3D printing, computed axial lithography does not build models through depositing layers of material, as fused deposition modelling and stereolithography does, instead it creates objects by projecting a 2D image of the spinning 3D model onto a cylinder of resin spinning at the same rate. It is notable for its ability to build an object much more quickly than other methods using resins and the ability to embed objects within the objects.